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3 years ago

How do i solve this using the substitution method

Mathematics

1 answer:

lana [24]3 years ago

5 0

First make them one side equation =0
0=-2y+4x+10
0=2y+6x-10
0=2x
x=0
substituted 0 in any of the original equation
2y=4(0)+10
2y=10 ....../2
y=5
check 2(5)=4(0)+10 .......>10=10

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What is the measure of angle X? Enter your answer as a decimal in the box. Round only your answer to the nearest hundredth. ° tr

klemol [59]

I have attached a diagram of the triangle described.

We can use any of the trigonometric functions to find angle x. Remember, SOH CAH TOA. And since we're finding the angle, we'll need to use an inverse trigonometric function. For this problem, I'll be using the sine function.

sin(x) = 84 / 85

x = sin^-1(84/85)

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Hope this helps!! :)

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3 years ago

Find the area simply your answer

Goshia [24]

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3 years ago

What is 25/6 times 2

Darya [45]

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6 0

3 years ago

Read 2 more answers

What is the slope of the line with the equation of y=-2/3x that passes through the point (2,1)

kow [346]

Answer:

$-\frac{2}{3} = m$

Step-by-step explanation:

In the Slope-Intercept Formula, $y = mx + b$ , b represents the y-intercept, and the rate of change [slope] is represented by m, so the slope is −⅔.

I am joyous to assist you anytime.

5 0

3 years ago

The perimeter of a rectangle is 16.6km, and its area is 13.42km2. Find its length and width. length : km width : km

Otrada [13]

Answer:

l=5.12 & w=2.62

Step by step explanation:

A=l×w

13.42=lw

w=13.42/l

$p = 2(l + w) \\ 16.6 = 2(l + \frac{13.42}{l} ) \\ 16.6 = 2( \frac{ {l}^{2} + 13.42}{l}) \\ 16.6 = 2(l + 13.42) \\ 16.6 = 2l + 26.84 \\ 2l = 26.84 - 16.6 \\ 2l = 10.24 \\ l = \frac{10.24}{2} \\ l = 5.12km$

Since you have found the value of the length you can find the value.of the width.

$w = \frac{13.42}{l} \\ w = \frac{13.42}{5.12} \\ w = 2.62km$

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3 years ago